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2010•Gaofenzi cailiao kexue yu gongchengRequires access

Intumescent Flame Retarded Polypropylene by PPM and PEPA

Pan Shi-bing

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Abstract

A novel intumescent flame retardant was prepared from pentaerythritol phosphate melamine salt (PPM) and pentaerythritol phosphate (PEPA),and was used to flame retard polypropylene (PP). The flammability performance,mechanical properties and thermal stability of flame-retarded PP were characterized by limiting oxygen index (LOI),UL94 test,differential scanning calorimetry (DSC) and thermogravimetric analysis (TG). The results show that with the mass ratio of PPM to PEPA of 3:2 and a 23% loading of PPM and PEPA,PP/PPM/PEPA blends meet UL94 V0 rating. Compared to PP,flexural strength of flame-retarded PP increases,tensile strength and impact strength decreases,decompition rate decreases,charring resides enhances.

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What this paper is about

A novel intumescent flame retardant was prepared from pentaerythritol phosphate melamine salt (PPM) and pentaerythritol phosphate (PEPA),and was used to flame retard polypropylene (PP). The flammability performance,mechanical properties and thermal stability of flame-retarded PP were characterized by limiting oxygen index (LOI),UL94 test,differential scanning calorimetry (DSC) and thermogravimetric analysis (TG). The results show that with the mass ratio of PPM to PEPA of 3:2 and a 23% loading of PPM and PEPA,PP/PPM/PEPA blends meet UL94 V0 rating. Compared to PP,flexural strength of flame-retarded PP increases,tensile strength and impact strength decreases,decompition rate decreases,charring resides enhances.

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Available abstract

A novel intumescent flame retardant was prepared from pentaerythritol phosphate melamine salt (PPM) and pentaerythritol phosphate (PEPA),and was used to flame retard polypropylene (PP). The flammability performance,mechanical properties and thermal stability of flame-retarded PP were characterized by limiting oxygen index (LOI),UL94 test,differential scanning calorimetry (DSC) and thermogravimetric analysis (TG). The results show that with the mass ratio of PPM to PEPA of 3:2 and a 23% loading of PPM and PEPA,PP/PPM/PEPA blends meet UL94 V0 rating. Compared to PP,flexural strength of flame-retarded PP increases,tensile strength and impact strength decreases,decompition rate decreases,charring resides enhances.

Key concepts: Intumescent, Limiting oxygen index, Materials science, Pentaerythritol, Polypropylene, Fire retardant, Thermogravimetric analysis, Composite material

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